Tensile failure characteristics of bolted wood joints subjected to bending moments Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/g732df319

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Traditionally, bolted joints have been designed to carry unidirectional loads. We have little knowledge about the effects of combined loading on the failure characteristics of joints with more than one bolt. In this thesis, two techniques are presented which enable such joints to be evaluated when they are subjected to a combination of tensile and bending forces. Firstly, a two-dimensional technique was developed. This involved placing specially prepared thin wafers of wood between two rigid Plexiglas plates. Steel pins passing through the Plexiglas-wafer assembly were used to represent bolts. Two bolt configurations and two grain orientations were investigated using the technique. Wafers were first tested to failure under tensile forces only, and following this, a series of tests were conducted in which combined tensile and bending forces were applied to wafers. Load-slip curves and visual observation of in-plane failure modes were used to determine the effects of combined loading on the behavior of the simulated joints. Results from preliminary tests using this technique suggest that bending moments can indeed significantly reduce the tensile strength properties of joints, and that the arrangement of bolts influences failure characteristics. A modified joint design (triangular bolt arrangement) appeared to be less susceptible to bending moments than the conventional design (three bolts in a line). Tests were also carried out on complete joints of conventional design (three bolts in a line). This was in order to evaluate the results from the wafer technique, and also to gain empirical information on the vulnerability of existing joint designs to combined loading. Results of the two-dimensional tests of the modified design were encouraging and full scale tests on complete joints with this new design are now considered warranted.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Nitin Mohan (mohanni@onid.orst.edu) on 2010-09-02T19:14:48Z No. of bitstreams: 1 FantozziJeffreyA1989.pdf: 2651312 bytes, checksum: 56ca1db2393728f2d3deea4a008f7ed4 (MD5)
  • description.provenance : Approved for entry into archive by Digital Production(digitalproduc@gmail.com) on 2010-09-02T19:36:55Z (GMT) No. of bitstreams: 1 FantozziJeffreyA1989.pdf: 2651312 bytes, checksum: 56ca1db2393728f2d3deea4a008f7ed4 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2010-09-03T16:21:58Z (GMT) No. of bitstreams: 1 FantozziJeffreyA1989.pdf: 2651312 bytes, checksum: 56ca1db2393728f2d3deea4a008f7ed4 (MD5)
  • description.provenance : Made available in DSpace on 2010-09-03T16:21:58Z (GMT). No. of bitstreams: 1 FantozziJeffreyA1989.pdf: 2651312 bytes, checksum: 56ca1db2393728f2d3deea4a008f7ed4 (MD5)

Relationships

In Administrative Set:
Last modified: 10/21/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items